1. Henan Provincial Key Laboratory of Animal ImmunologyHenan Academy of Agricultural Sciences Zhengzhou 450002 China
2. College of Veterinary MedicineNorthwest A&F University Yangling 712100 China
3. Jiangsu Co‐Innovation Center for Prevention and Control of Important Animal Infectious Diseases and ZoonosesYangzhou University Yangzhou 225009 China
4. College of Animal Science and Veterinary MedicineHenan Agricultural University Zhengzhou 450002 China
5. CAS Key Laboratory of Pathogenic Microbiology and ImmunologyInstitute of MicrobiologyChinese Academy of Sciences Beijing 100101 China